001    // Copyright 2004, 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    package org.apache.tapestry.services;
015    
016    import java.io.IOException;
017    
018    import org.apache.tapestry.IRequestCycle;
019    import org.apache.tapestry.engine.DirectService;
020    
021    
022    /**
023     * Service used by {@link DirectService} to determine type of ajax request
024     * receive and determine the appropriate {@link ResponseBuilder} to handle
025     * the response.
026     *
027     * @author jkuhnert
028     */
029    public interface ResponseDelegateFactory {
030        
031        /**
032         * Creates an appropriate {@link ResponseBuilder} for the incoming 
033         * ajax request, if possible.
034         * 
035         * @param cycle
036         *          The request cycle for this request.
037         * @return The configured response builder.
038         */
039        ResponseBuilder getResponseBuilder(IRequestCycle cycle)
040        throws IOException;
041    }